Folding portable stadium seat



FIG. 1 is a front elevation of a folding portable stadium seat showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a side elevation, the opposite side being a mirror image thereof;

FIG. 4 is a rear elevation thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showing in all views is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for a folding portable stadium seat, as shown and described. 